Notice of Removal: The High Efficiency Optimization of the Ka-band Sheet Beam EIO

2019 ◽  
Author(s):  
Xiaoxiao Li ◽  
Jianxun Wang ◽  
Lingshan Rui ◽  
Zeng Liu ◽  
Yulu Hu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Ka Band ◽  
Efficiency Optimization

scholarly journals Ka-Band Lightweight High-Efficiency Wideband 3D Printed Reflector Antenna

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Yu Zhai ◽  
Ding Xu ◽  
Yan Zhang
Keyword(s):  
High Efficiency ◽  
Near Field ◽  
Side Lobe ◽  
High Gain ◽  
Reflector Antenna ◽  
Field Analysis ◽  
Side Lobe Level ◽  
Ka Band ◽  
3D Printed ◽  
Reflecting Surface

This paper presents a lightweight, cost-efficient, wideband, and high-gain 3D printed parabolic reflector antenna in the Ka-band. A 10 λ reflector is printed with polylactic acid- (PLA-) based material that is a biodegradable type of plastic, preferred in 3D printing. The reflecting surface is made up of multiple stacked layers of copper tape, thick enough to function as a reflecting surface (which is found 4 mm). A conical horn is used for the incident field. A center-fed method has been used to converge the energy in the broadside direction. The proposed antenna results measured a gain of 27.8 dBi, a side lobe level (SLL) of −22 dB, and a maximum of 61.2% aperture efficiency (at 30 GHz). A near-field analysis in terms of amplitude and phase has also been presented which authenticates the accurate spherical to planar wavefront transformation in the scattered field.

scholarly journals Regenerative braking control strategy based on joint high-efficiency optimization

2016 ◽  
Vol 8 (10) ◽  
pp. 168781401667353 ◽  
Author(s):  
Tao Deng ◽  
Chunsong Lin ◽  
Bin Chen ◽  
Chuanfu Ma
Keyword(s):  
Control Strategy ◽  
High Efficiency ◽  
Regenerative Braking ◽  
Efficiency Optimization ◽  
Braking Control

A High Efficiency, Ka-Band, GaN-on-SiC MMIC with Low Compression

2019 ◽  
Author(s):  
Bruce Schmukler ◽  
Jeffrey Barner ◽  
Jeremy Fisher ◽  
Don A. Gajewski ◽  
Scott T. Sheppard ◽  
...  
Keyword(s):  
High Efficiency ◽  
Ka Band

A MODIFIED VAN DER PAUW SETUP FOR MEASURING THE RESISTIVITY AND THERMOPOWER OF THERMOELECTRIC MATERIALS OF VARYING THICKNESSES

2013 ◽  
Vol 06 (05) ◽  
pp. 1340009 ◽  
Author(s):  
DALE HITCHCOCK ◽  
SPENCER WALDROP ◽  
JARED WILLIAMS ◽  
TERRY M. TRITT
Keyword(s):  
Thermoelectric Materials ◽  
Room Temperature ◽  
High Efficiency ◽  
Vast Number ◽  
Efficiency Optimization ◽  
Resistivity Measurements ◽  
High Efficient ◽  
Van Der Pauw ◽  
Binary Compounds ◽  
New Compounds

In the investigation of thermoelectric (TE) materials as a practical, and efficient, means of power generation/ refrigeration nearly ninety percent of the possible high-efficient binary compounds have been evaluated. But only a few proved to be useful such as Bi 2 Te 3 alloys, PbTe and SiGe to name the most important materials. Therefore, in order to expand the research of high-efficiency TE materials new compounds and methods of efficiency optimization must be explored. There currently exist a vast number of uninvestigated ternary and quaternary materials that could be potential high-efficiency thermoelectric materials. The device and methodology discussed herein deal with rapidly measuring both the electrical resistivity and the Seebeck coefficient of thermoelectric materials, at a set temperature of T ≈ 300 K. Using nontraditional resistivity measurements and rapid, room-temperature thermopower measurements, a reliable and time-efficient means of gauging the power factor (defined below) values of newly synthesized thermoelectric materials is achievable. Furthermore, the efficacy of the van der Pauw technique for measuring the resistivity of thermoelectric materials has been verified.

Sign in / Sign up

Export Citation Format

Share Document